Watanabei Angelfish

Genicanthus watanabei


(2 Reviews)

Watanabei Angelfish
Genicanthus watanabei, known as the Watanabe's Angelfish, boasts a striking mix of blue and white stripes that shimmer in the light. Easy to care for, it's a peaceful addition with a flair for adding elegance to any saltwater aquarium.

Watanabei Angelfish

Genicanthus watanabei


(2 Reviews)

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Watanabei Angelfish Care Facts

Care Level: Moderate
Temperament: Peaceful
Diet: Omnivore
Reef Safe: Yes
Minimum Tank Size: 120 gallons
Max Size: 6 inches
Very few fish show sexual dimorphism, out of those few the Watanabei Angelfish, Genicanthus watanabei, is one of them. Both males and females have the same pale blue body color with black lining along the upper and lower fins. The difference in the sexes here is that the female has black blotching on the face and black outlines on the tail with no stripes on the body, whereas the male lacks this black blotching on the face and instead displays several horizontal blacks lines on the lower half of the body and no black on the tail. Since they are more peaceful than many other Angelfish, they can be kept as a mated pair, or in a small school of females. Avoid keeping two males in the same tank, as it can lead to extreme aggression.

These Angelfish are also unique in the way that they are reef safe, and will not nip at soft and stony corals, or sessile invertebrates, making them a great choice for an Angelfish in a reef tank setting. Diet should include a variety of spirulina, marine algae, high quality angelfish preparations, mysis and brine shrimp, 3 times daily.


The Watanabei Angelfish (Genicanthus watanabei): An Alluring Addition to Saltwater Marine Aquariums

Introducing the Watanabei Angelfish (Genicanthus watanabei), an exquisite and visually captivating marine inhabitant graces your saltwater marine aquarium with its ethereal beauty. Flourishing in the vibrant waters of the western Pacific, this species adds a touch of elegance to the intricate tapestry of coral reefs, rocky formations, and coastal shallows.

Natural Habitat and Compatibility of the Watanabei Angelfish

The Watanabei Angelfish is naturally found in coral-rich environments, where its captivating colors and graceful movements seamlessly blend into the underwater world. When assessing compatibility within reef ecosystems, it's vital to consider their interactions with other species. Generally considered reef safe, they tend to focus on consuming zooplankton and small invertebrates rather than coral polyps.

Size and Lifespan of the Watanabei Angelfish

With its graceful appearance, the Watanabei Angelfish boasts a moderate size, usually around 5 to 6 inches. Their potential lifespan of up to 7 to 10 years ensures enthusiasts are rewarded with a captivating marine companion that adds elegance to their aquarium.

Diet and Feeding of the Watanabei Angelfish in Captivity

Caring for the Watanabei Angelfish's well-being involves replicating its natural diet. In the wild, they feed on zooplankton and small invertebrates. In captivity, providing a varied diet of high-quality marine-based pellets, enriched frozen foods such as mysis and brine shrimp, and occasional offerings of live or frozen copepods closely mirrors their natural feeding behaviors.

Aquaculture and Availability of the Watanabei Angelfish

Aquaculture efforts for the Watanabei Angelfish are limited, and most individuals available to hobbyists are sourced from the wild. Choosing reputable suppliers that prioritize ethical collection practices and responsible handling ensures the well-being of these captivating creatures.

Compatibility with Other Fish and Invertebrates for the Watanabei Angelfish

Understanding the Watanabei Angelfish's temperament is pivotal when selecting suitable tank mates. Their peaceful demeanor and tendency to swim in the open water column make them compatible with various non-aggressive species with similar requirements.

Sexual Dimorphism and Temperament of the Watanabei Angelfish

The Watanabei Angelfish displays distinct sexual dimorphism, with males exhibiting black horizontal bands while females exhibiting bluish body colors. Their peaceful temperament and propensity to school in open water enhance the tranquility of your aquarium.

Tank Requirements and Aquascaping for the Watanabei Angelfish

To ensure the optimal well-being of the Watanabei Angelfish, provide a tank with a minimum capacity of 120 gallons. Their natural affinity for open water necessitates an uncluttered aquascape. Incorporate live rock formations for hiding and grazing while leaving ample swimming space.

Detailed Water Conditions for the Watanabei Angelfish

Maintain the health and vibrancy of the Watanabei Angelfish by adhering to the following water conditions:

  • pH: 8.1 to 8.4
  • Salinity: 1.020 to 1.025 specific gravity
  • Water Temperature: 74°F to 78°F (23.3°C to 25.6°C)
  • Water Flow: Moderate flow to simulate their natural habitat.

Other Common Names for the Watanabei Angelfish

The Watanabei Angelfish may also be recognized by its alternate common name, the Watanabe's Angelfish.

Compatible Tank Mates for the Watanabei Angelfish

Selecting companions for the Watanabei Angelfish involves choosing species that share a peaceful disposition. Suitable tank mates include the Blue Green Chromis (Chromis viridis), the Orchid Dottyback (Pseudochromis fridmani), the Pajama Cardinalfish (Sphaeramia nematoptera), the Firefish Goby (Nemateleotris magnifica), and the Six Line Wrasse (Pseudocheilinus hexataenia).

Why Choose the Watanabei Angelfish from Saltwaterfish.com

Opting for the Watanabei Angelfish from Saltwaterfish.com demonstrates your commitment to introducing a captivating and visually striking marine inhabitant to your aquarium. As a trusted source for marine life, Saltwaterfish.com prioritizes the health and well-being of the species it offers. Through meticulous collection and acclimatization processes, the Watanabei Angelfish arrives in prime condition, ready to enhance the beauty and elegance of your marine ecosystem.

So far so good! In quarantine now, eating and doing well. Dosing prazi and oral metronidazole, water parameters are great…only 23 days to go!


Reviewed by: Mary Celeste Fischer on Aug. 25, 2024

Watanabei Angelfish: Female Great addition to 28g Biocube reef tank. Very healthy and active. Add great color to coral tank.


Reviewed by: Les Milston on Sept. 11, 2021

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